Question

What did Sherlock Holmes find out from the hat? How did he explain his

findings?​

Answer 1

Peterson takes the goose home for dinner, and Holmes keeps the hat to study as an intellectual exercise. Peterson returns excited, carrying the Blue Carbuncle, saying that he found the gem in the goose's crop (an error by Conan Doyle, as geese, do not have a crop)...Holmes gives Baker a new goose